from Wiktionary, Creative Commons Attribution/Share-Alike License

from The Century Dictionary and Cyclopedia

n. the unit of measurement for the proportion of gold in an alloy; 18-karat gold is 75% gold; 24-karat gold is pure gold

Etymologies

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Examples

i guess the powers that be have nothing better to do than think of useless ideas. why don't they just buy books for poor kids/rural kids, conduct reading/writing workshops etc? in kt, there's a huge library there, and it's hardly used at all. what a waste.